CN208918825U - A kind of frequency conversion gear pump - Google Patents
A kind of frequency conversion gear pump Download PDFInfo
- Publication number
- CN208918825U CN208918825U CN201821690654.1U CN201821690654U CN208918825U CN 208918825 U CN208918825 U CN 208918825U CN 201821690654 U CN201821690654 U CN 201821690654U CN 208918825 U CN208918825 U CN 208918825U
- Authority
- CN
- China
- Prior art keywords
- pump
- head
- gear pump
- pump case
- frequency conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rotary Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a kind of frequency conversion gear pumps, including pump case and gear pump head；Brushless DC motor stator interference fit is fixed on pump case inner wall, pump case inner wall is equipped with drive end bearing bracket, front-end bearing pedestal is welded on drive end bearing bracket, fore bearing is installed on front-end bearing pedestal, gear pump head is installed on drive end bearing bracket, brshless DC motor p-m rotor one end is directly connected to gear pump head, front head is installed in pump case, it is equipped on rear head in pump case, rear bearing block is installed on rear head, rear bearing is installed on rear bearing block, the brshless DC motor p-m rotor other end is mounted in rear bearing, connecting terminal and terminal box are installed on rear head, the wiring of brushless DC motor stator is connected by connecting terminal with external driving and the wiring of governor, pump intake and pump discharge are provided in pump case.The frequency conversion gear pump solves deficiency of the existing gear pump on conveying refrigerant, keeps gear pump working range wider, more stable, more efficient energy conservation.
Description
Technical field
The utility model relates to computer room or data center's air-conditioning technical field more particularly to a kind of frequency conversion gear pumps.
Background technique
In field of Refrigeration and Air-conditioning, the use with gear pump conveying refrigerant is more and more.Since gear pump is positive displacement
Pump, discharge capacity need flow automatic regulation it has been determined that under variable working condition, and common mode is to pass through to gear pump with frequency converter
Frequency converter carrys out adjustment gear pumpage.But this mode has the disadvantage that:
1. adjustable range is relatively narrow, can not wide scope use, need replacing different type of machines under different operating conditions；
2. being easy to appear instability of flow when variable frequency adjustment；
3. when converting operation, noise of motor is big；
4. individually matching frequency converter, increased costs.
Utility model content
In order to solve the above-mentioned technical problem the utility model, provides a kind of frequency conversion gear pump, solve existing gear pump and exist
The deficiency on refrigerant is conveyed, keeps gear pump working range wider, more stable, more efficient energy conservation.
The utility model is to be achieved through the following technical solutions:
A kind of frequency conversion gear pump, including pump case and gear pump head；Brushless DC motor stator interference fit is fixed on pump
Inner walls, pump case inner wall are equipped with drive end bearing bracket, and front-end bearing pedestal is welded on drive end bearing bracket, is equipped with front axle on front-end bearing pedestal
It holds, gear pump head is installed on drive end bearing bracket, brshless DC motor p-m rotor one end is directly connected to gear pump head, pacifies in pump case
It equipped with front head, is equipped on rear head in pump case, rear bearing block is installed on rear head, rear axle is installed on rear bearing block
It holds, the brshless DC motor p-m rotor other end is mounted in rear bearing, and connecting terminal and terminal box, nothing are equipped on rear head
The wiring of brushless motor stator is connected by connecting terminal with external driving and the wiring of governor, and pump is provided in pump case
Entrance and pump discharge.
The gear pump head is bolted on drive end bearing bracket, and fore bearing is mounted in the hole of front-end bearing pedestal.
The gear pump head includes backgear cover board, gear assembly and front gear cover board；Before backgear cover board is fixed on
On end cap, backgear cover forward end successively installs gear assembly and front gear cover board, and blending bolt is urgent.
The rear bearing is mounted in rear bearing bore, and rear bearing block is fixed by welding on rear head.
Pump case, front head and the rear head forms a closed cavity by welding.
In the brushless DC motor stator interference fit indentation pump case, there is limited step in pump case, it is ensured that nothing
Brushless motor stator is pressed onto position and withstands on step.
The pump case is mounted on the base.
The drive end bearing bracket is mounted on pump case inner wall and spot welding is fixed.
Compared with prior art, the utility model has technical effect beneficial below:
Frequency conversion gear pump provided by the utility model solves deficiency of the existing gear pump on conveying refrigerant, makes gear pump
Working range is wider, more stable, more efficient energy conservation.Meanwhile flow adjustment range is wide, can a pump use in various operating conditions
Under；Flow is more stable when variable frequency adjustment, more reliable；Cost is lower；Noise is smaller；Small power consumption.
Detailed description of the invention
Fig. 1 is frequency conversion gear pump structure schematic diagram provided by the utility model.
Wherein, 1 is pump intake, and 2 be pump case, and 3 be drive end bearing bracket, and 4 be fore bearing, and 5 be front-end bearing pedestal, and 6 be brushless direct-current
Motor permanent magnetic rotor, 7 be brushless DC motor stator, and 8 be pump discharge, and 9 be rear head, and 10 be connecting terminal, and 11 be terminal box,
12 be rear bearing block, and 13 be rear bearing, and 14 be pedestal, and 15 be backgear cover board, and 16 be gear assembly, and 17 be front gear cover board,
18 be front head, and 19 be external driving and governor.
Specific embodiment
The utility model is described in further detail below with reference to specific embodiment, described is to the utility model
Explanation rather than limit.
Referring to Fig. 1, a kind of frequency conversion gear pump, including pump case 2 and gear pump head；7 interference of brushless DC motor stator is matched
Conjunction is fixed on 2 inner wall of pump case, and 2 inner wall of pump case is equipped with drive end bearing bracket 3, front-end bearing pedestal 5, fore bearing are welded on drive end bearing bracket 3
Fore bearing 4 is installed on seat 5, gear pump head is installed, 6 one end of brshless DC motor p-m rotor is directly connected on drive end bearing bracket 3
Gear pump head is equipped with front head 18 in pump case 2, is equipped on rear head 9 in pump case 2, is equipped with rear axle on rear head 9
Seat 12 is held, rear bearing 13 is installed on rear bearing block 12,6 other end of brshless DC motor p-m rotor is mounted on rear bearing 13
On, connecting terminal 10 and terminal box 11 are installed, the wiring of brushless DC motor stator 7 passes through connecting terminal 10 on rear head 9
It is connected with external driving and the wiring of governor 19, pump intake 1 and pump discharge 8 is provided in pump case 2.
The gear pump head is bolted on drive end bearing bracket 3, and fore bearing 4 is mounted in the hole of front-end bearing pedestal 5.
The gear pump head includes backgear cover board 15, gear assembly 16 and front gear cover board 17；Backgear cover board 15
It is fixed on drive end bearing bracket 3, gear assembly 16 and front gear cover board 17 are successively installed in 15 front end of backgear cover board, and blending bolt is beaten
Tightly.
The rear bearing 13 is mounted in rear bearing bore, and rear bearing block 12 is fixed by welding on rear head 9.
Pump case 2, front head 18 and the rear head 9 forms a closed cavity by welding.
In the interference fit indentation pump case 2 of brushless DC motor stator 7, there is limited step in pump case 2, it is ensured that
Brushless DC motor stator 7 is pressed onto position and withstands on step.
The pump case 2 is mounted on pedestal 14.
The drive end bearing bracket 3 is mounted on 2 inner wall of pump case and spot welding is fixed.
Specifically, gear pump head is made of gear assembly 16, backgear cover board 15 and front gear cover board 17.Gear pump head is logical
It crosses and is bolted on drive end bearing bracket 3, fore bearing 4 is mounted in the hole of front-end bearing pedestal 5.Brushless DC motor stator 7 is interference fitted
It is pressed into pump case 2, has limited step in pump case 2, it is ensured that brushless DC motor stator 7 is pressed onto position and withstands on step.Rear axle
It holds 13 to be mounted in rear bearing bore, rear bearing block 12 is fixed by welding on rear head 9.Brshless DC motor p-m rotor
6 are directly connected to gear pump head, save shaft coupling, are driven more efficient.Pump case 2, front head 18 and rear head 9 pass through welding, shape
At a closed cavity.The wiring of brushless DC motor stator 7 and external driving and the wiring of governor 19 are by connecting terminal 10
Conducting.
Installation procedure: pedestal 14 is welded in pump case 2, and the interference fit of brushless DC motor stator 7 is fixed on pump case 2
Inner wall, fore bearing 4 are mounted on front-end bearing pedestal 5, and front-end bearing pedestal 5 is welded on drive end bearing bracket 3, and drive end bearing bracket 3 is mounted in pump case 2
Wall simultaneously fix by spot welding, installs brshless DC motor p-m rotor 6, rear bearing 13 is mounted on rear bearing block 12, rear bearing block 12
It is mounted on rear head 9, rear head 9 is mounted in pump case 2, and backgear cover board 15 is fixed on drive end bearing bracket 3, successively installs tooth
Wheel assembly 16 and 17 blending bolt of front gear cover board are urgent, and front head 18 is mounted in pump case 2.
Coolant media is inhaled into pump from pump intake 1, after the pressurization of gear assembly 16, front-end bearing pedestal 5 is flowed through, to fore bearing
4 are lubricated；By brushless DC motor stator 7, motor is cooled down；Later through rear bearing carrier 12, to rear bearing 13
It is lubricated；It is most flowed out afterwards through pump discharge 8, completes the transmission process of a medium.The axis of motor shaft and pump head is an axis, is saved
Intermediate shaft coupling is removed, centering is more preferable, and transmission efficiency is higher.
Use without Hall 180 degree sine wave direct current variable frequency motor (abbreviation BLDC) by brshless DC motor p-m rotor 6,
Brushless DC motor stator 7 and external driving and governor 19 form, and the BLDC control program of no Hall and have Hall BLDC's
Basic principle is similar, is all with so-called " six step reverses ", according to the current position of brshless DC motor p-m rotor, according to one
Fixed sequence rotates BLDC motor to stator winding i.e. brushless DC motor stator energization.Except that without Hall
BLDC does not need hall effect sensor, judges brshless DC motor forever by detecting the back electromotive force zero-crossing of stator winding
The current position of magnet rotor.Compared with the scheme for having Hall, most clear advantage is exactly to reduce costs, reduce volume.And
Motor down-lead becomes 3 from 8, keeps wiring debugging all greatly simplified.In addition, Hall sensor is easy by outside temperature and magnetic field etc.
The influence of boundary's environment, failure rate are higher.Therefore, no Hall BLDC is more and more applied, and is just gradually taken in many occasions
, there is Hall BLDC in generation.The variable frequency adjustment to motor is realized by adjusting the speed regulation knob on external driving and governor 19.Nothing
Hall 180 degree sine wave direct current variable frequency motor is also referred to as without Hall brushless DC motor.
No Hall brushless DC motor by brushless DC motor stator, brshless DC motor p-m rotor and it is external driving and
Governor composition.Its internal electromagnetic process occurred is similar with common brushed DC motor, and brshless DC motor had both had directly
The features such as galvanic electricity machine good speed adjusting performance, and there is simple ac motor structure, non-commutation spark, reliable for operation and be easy to tie up
The advantages that shield.
Brshless DC motor can be divided into trapezoidal and sinusoidal motor, the back-emf that different windings generates by winding connection
Difference, trapezoidal winding generate trapezoidal back-emf, and sine windings generate sinusoidal back-emf.The control of square wave driving motor is simple, is easy
The problems such as realizing, existing simultaneously torque pulsation, commutation noise, in the application field that some pairs of noises require, there are limitations.
Compared with traditional square wave control, sinusoidal drive electric machine phase current is sine, and consecutive variations, no converting commutating current are mutated, therefore
Motor operation noise is low, therefore drives gear pump using 180 degree sine wave direct current variable frequency motor.
Frequency conversion gear pump provided by the utility model solves deficiency of the existing gear pump on conveying refrigerant, makes gear pump
Working range is wider, more stable, more efficient energy conservation.Meanwhile flow adjustment range is wide, can a pump use in various operating conditions
Under；Flow is more stable when variable frequency adjustment, more reliable；Cost is lower；Noise is smaller；Small power consumption.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (8)
1. a kind of frequency conversion gear pump, which is characterized in that including pump case (2) and gear pump head；Brushless DC motor stator (7) mistake
Cooperation of being full of is fixed on pump case (2) inner wall, and pump case (2) inner wall is equipped with drive end bearing bracket (3), and drive end bearing bracket is welded with front axle on (3)
It holds seat (5), is equipped on front-end bearing pedestal (5) fore bearing (4), gear pump head is installed, brshless DC motor is forever on drive end bearing bracket (3)
Magnet rotor (6) one end is directly connected to gear pump head, is equipped in pump case (2) front head (18), after being equipped in pump case (2)
It on end socket (9), is equipped with rear bearing block (12), is equipped on rear bearing block (12) rear bearing (13) on rear head (9), it is brushless straight
Stream motor permanent magnetic rotor (6) other end is mounted on rear bearing (13), and connecting terminal (10) and wiring are equipped on rear head (9)
Box (11), the wiring that the wiring of brushless DC motor stator (7) passes through connecting terminal (10) and external driving and governor (19)
It is connected, is provided with pump intake (1) and pump discharge (8) in pump case (2).
2. frequency conversion gear pump according to claim 1, which is characterized in that the gear pump head is bolted preceding
On end cap (3), fore bearing (4) is mounted in the hole of front-end bearing pedestal (5).
3. frequency conversion gear pump according to claim 1, which is characterized in that the gear pump head includes backgear cover board
(15), gear assembly (16) and front gear cover board (17)；Backgear cover board (15) is fixed on drive end bearing bracket (3), backgear cover board
(15) gear assembly (16) and front gear cover board (17) are successively installed in front end, and blending bolt is urgent.
4. frequency conversion gear pump according to claim 1, which is characterized in that the rear bearing (13) is mounted on rear bearing block
In hole, rear bearing block (12) is fixed by welding on rear head (9).
5. frequency conversion gear pump according to claim 1, which is characterized in that the pump case (2), front head (18) and after
End socket (9) forms a closed cavity by welding.
6. frequency conversion gear pump according to claim 1, which is characterized in that described brushless DC motor stator (7) interference
In cooperation indentation pump case (2), there is limited step in pump case (2), it is ensured that brushless DC motor stator (7) is pressed onto position and withstands on platform
On rank.
7. frequency conversion gear pump according to claim 1, which is characterized in that the pump case (2) is mounted on pedestal (14)
On.
8. frequency conversion gear pump according to claim 1, which is characterized in that the drive end bearing bracket (3) is mounted on pump case (2)
Inner wall simultaneously fix by spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821690654.1U CN208918825U (en) | 2018-10-18 | 2018-10-18 | A kind of frequency conversion gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821690654.1U CN208918825U (en) | 2018-10-18 | 2018-10-18 | A kind of frequency conversion gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208918825U true CN208918825U (en) | 2019-05-31 |
Family
ID=66709751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821690654.1U Active CN208918825U (en) | 2018-10-18 | 2018-10-18 | A kind of frequency conversion gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208918825U (en) |
-
2018
- 2018-10-18 CN CN201821690654.1U patent/CN208918825U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017008439A1 (en) | High-speed hall-less three-phase vacuum cleaner motor | |
| CN208236678U (en) | A kind of automobile brshless DC motor water pump | |
| CN208918825U (en) | A kind of frequency conversion gear pump | |
| CN202441557U (en) | Air compressor | |
| CN201246314Y (en) | Direct connecting type high speed centrifugal air blower | |
| CN209818330U (en) | Automobile electronic water pump | |
| CN204992936U (en) | There is not hall three -phase dust catcher motor at a high speed | |
| CN105275827A (en) | Direct-current brushless draining pump and draining system for air conditioner | |
| CN204492951U (en) | A kind of temperature control electronic water pump | |
| CN203239572U (en) | Brushless direct current sliding vane rotary vacuum pump | |
| CN205622447U (en) | Adopt axial flux brushless motor's dust collector fan | |
| CN201629635U (en) | Permanent magnet synchronous motor for new energy automobile | |
| CN210129801U (en) | Permanent magnet synchronous motor and pump integrated system | |
| CN202628558U (en) | Condensing fan used for automobile air conditioner | |
| CN202091211U (en) | High-temperature-resistant rare-earth permanent-magnet brushless direct current self-priming pump | |
| CN105471215A (en) | Six-slot three-phase outer rotor brushless fan motor for refrigerator | |
| CN211039110U (en) | Single-phase brushless direct current electric fan | |
| CN213392722U (en) | Double-end electronic water pump | |
| CN205618394U (en) | Adopt axial flux brushless motor's dust collector fan | |
| CN2733729Y (en) | Brushless DC motor with outlaid hall element | |
| CN201947144U (en) | Permanent magnet brushless direct current motor of bean juice maker | |
| CN202059271U (en) | Water cooling driving motor used for electric automobile | |
| CN210397086U (en) | Permanent magnet synchronous motor and pump integrated efficient energy-saving driving system | |
| CN207979211U (en) | Fan housing structure of motor and brushless motor | |
| CN216111314U (en) | High-efficient air-cooled permanent magnetism intelligence pumping plant of integrated control ware |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |